Extension of Dilution Limit in Propane-Air mixtures Using Microwave Discharge Igniter

Paper #:
  • 2017-24-0148

Published:
  • 2017-09-04
Abstract:
Exhaust gas recirculation (EGR) has proven to be very beneficial for fuel economy improvement as well as knock and emissions reduction. Combining with lean burning, it can help modern gasoline engines to become cleaner, more efficient and meeting the stringent emissions limit. However, there is a practical limit for lean mixture and EGR percentage for current engine due to many constraints, one of which being the ignition source. The Microwave Discharge Igniter (MDI), which generates, enhances and sustains plasma discharge using microwave (MW) resonance was tested to assess its ability in extending these limits. A combination of high-speed Schlieren imaging and pressure measurements were performed for propane-air mixture combustion inside a constant volume chamber to compare the dilution and lean limit between MDI and traditional spark plug. Nitrogen addition was carried out during mixture preparation to simulate the dilution condition of EGR. Results indicated that the MDI can successfully outperform the conventional spark plug and have better dilution and lean performance. Optimisation of MDI control parameters from its semiconductor source can further improve its performance in these conditions.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Attention: This item is not yet published. Pre-Order to be notified, via email, when it becomes available.
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Training / Education
2011-04-12
Technical Paper / Journal Article
1996-04-01
Technical Paper / Journal Article
2007-03-06
Training / Education
2009-12-15
Article
2016-07-01
Technical Paper / Journal Article
1988-03-01